./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel/ticket-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel/ticket-2.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f12b3b4dd2017acb86e20c9c3489e72380a60386 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-04 18:48:27,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-04 18:48:27,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-04 18:48:27,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-04 18:48:27,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-04 18:48:27,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-04 18:48:27,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-04 18:48:27,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-04 18:48:27,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-04 18:48:27,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-04 18:48:27,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-04 18:48:27,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-04 18:48:27,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-04 18:48:27,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-04 18:48:27,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-04 18:48:27,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-04 18:48:27,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-04 18:48:27,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-04 18:48:27,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-04 18:48:27,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-04 18:48:27,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-04 18:48:27,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-04 18:48:27,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-04 18:48:27,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-04 18:48:27,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-04 18:48:27,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-04 18:48:27,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-04 18:48:27,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-04 18:48:27,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-04 18:48:27,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-04 18:48:27,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-04 18:48:27,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-04 18:48:27,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-04 18:48:27,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-04 18:48:27,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-04 18:48:27,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-04 18:48:27,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-04 18:48:27,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-04 18:48:27,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-04 18:48:27,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-04 18:48:27,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-04 18:48:27,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-04 18:48:27,925 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-04 18:48:27,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-04 18:48:27,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-04 18:48:27,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-04 18:48:27,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-04 18:48:27,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-04 18:48:27,929 INFO L138 SettingsManager]: * Use SBE=true [2021-10-04 18:48:27,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-04 18:48:27,929 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-04 18:48:27,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-04 18:48:27,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-04 18:48:27,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-04 18:48:27,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-04 18:48:27,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-04 18:48:27,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-04 18:48:27,932 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-04 18:48:27,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-04 18:48:27,932 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-04 18:48:27,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-04 18:48:27,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-04 18:48:27,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-04 18:48:27,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-04 18:48:27,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-04 18:48:27,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-04 18:48:27,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-04 18:48:27,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-04 18:48:27,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-04 18:48:27,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-04 18:48:27,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-04 18:48:27,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-04 18:48:27,942 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f12b3b4dd2017acb86e20c9c3489e72380a60386 [2021-10-04 18:48:28,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-04 18:48:28,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-04 18:48:28,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-04 18:48:28,409 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-04 18:48:28,409 INFO L275 PluginConnector]: CDTParser initialized [2021-10-04 18:48:28,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel/ticket-2.wvr.c [2021-10-04 18:48:28,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/084dd9525/dbc424eb3b604de39bce64b7401a4280/FLAG4de927309 [2021-10-04 18:48:29,069 INFO L306 CDTParser]: Found 1 translation units. [2021-10-04 18:48:29,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/ticket-2.wvr.c [2021-10-04 18:48:29,070 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-04 18:48:29,070 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-04 18:48:29,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/084dd9525/dbc424eb3b604de39bce64b7401a4280/FLAG4de927309 [2021-10-04 18:48:29,448 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/084dd9525/dbc424eb3b604de39bce64b7401a4280 [2021-10-04 18:48:29,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-04 18:48:29,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-04 18:48:29,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-04 18:48:29,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-04 18:48:29,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-04 18:48:29,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.10 06:48:29" (1/1) ... [2021-10-04 18:48:29,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6ac320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:48:29, skipping insertion in model container [2021-10-04 18:48:29,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.10 06:48:29" (1/1) ... [2021-10-04 18:48:29,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-04 18:48:29,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-04 18:48:29,623 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-04 18:48:29,664 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/ticket-2.wvr.c[1238,1251] [2021-10-04 18:48:29,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-04 18:48:29,680 INFO L203 MainTranslator]: Completed pre-run [2021-10-04 18:48:29,692 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-04 18:48:29,703 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/ticket-2.wvr.c[1238,1251] [2021-10-04 18:48:29,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-04 18:48:29,719 INFO L208 MainTranslator]: Completed translation [2021-10-04 18:48:29,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:48:29 WrapperNode [2021-10-04 18:48:29,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-04 18:48:29,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-04 18:48:29,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-04 18:48:29,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-04 18:48:29,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:48:29" (1/1) ... [2021-10-04 18:48:29,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:48:29" (1/1) ... [2021-10-04 18:48:29,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-04 18:48:29,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-04 18:48:29,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-04 18:48:29,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-04 18:48:29,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:48:29" (1/1) ... [2021-10-04 18:48:29,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:48:29" (1/1) ... [2021-10-04 18:48:29,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:48:29" (1/1) ... [2021-10-04 18:48:29,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:48:29" (1/1) ... [2021-10-04 18:48:29,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:48:29" (1/1) ... [2021-10-04 18:48:29,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:48:29" (1/1) ... [2021-10-04 18:48:29,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:48:29" (1/1) ... [2021-10-04 18:48:29,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-04 18:48:29,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-04 18:48:29,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-04 18:48:29,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-04 18:48:29,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:48:29" (1/1) ... [2021-10-04 18:48:29,799 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-04 18:48:29,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-04 18:48:29,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-04 18:48:29,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-04 18:48:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-04 18:48:29,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-04 18:48:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-04 18:48:29,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-04 18:48:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-04 18:48:29,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-04 18:48:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-04 18:48:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-04 18:48:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-04 18:48:29,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-04 18:48:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-04 18:48:29,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-04 18:48:29,892 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-04 18:48:30,312 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-04 18:48:30,318 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-04 18:48:30,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 06:48:30 BoogieIcfgContainer [2021-10-04 18:48:30,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-04 18:48:30,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-04 18:48:30,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-04 18:48:30,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-04 18:48:30,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.10 06:48:29" (1/3) ... [2021-10-04 18:48:30,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b322ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 06:48:30, skipping insertion in model container [2021-10-04 18:48:30,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.10 06:48:29" (2/3) ... [2021-10-04 18:48:30,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b322ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 06:48:30, skipping insertion in model container [2021-10-04 18:48:30,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 06:48:30" (3/3) ... [2021-10-04 18:48:30,336 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-2.wvr.c [2021-10-04 18:48:30,346 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-04 18:48:30,347 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-04 18:48:30,347 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-04 18:48:30,347 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-04 18:48:30,417 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,418 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,418 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,419 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,419 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,419 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,420 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,420 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,420 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,421 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,422 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,422 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,423 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,423 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,423 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,424 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,424 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,425 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,425 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,425 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,426 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,426 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,426 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,427 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,427 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,428 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,429 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,429 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,430 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,430 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,430 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,431 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,431 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,432 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,432 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,432 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,434 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,434 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,435 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,435 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,436 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,437 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,437 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,438 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,438 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,438 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,438 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,439 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,447 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,448 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,449 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,449 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,449 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,450 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,453 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,453 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,454 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,454 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,454 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,455 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-04 18:48:30,472 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-04 18:48:30,526 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-04 18:48:30,533 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-04 18:48:30,533 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-04 18:48:30,551 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-04 18:48:30,564 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 95 transitions, 206 flow [2021-10-04 18:48:30,567 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 95 transitions, 206 flow [2021-10-04 18:48:30,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 95 transitions, 206 flow [2021-10-04 18:48:30,642 INFO L129 PetriNetUnfolder]: 4/93 cut-off events. [2021-10-04 18:48:30,643 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-04 18:48:30,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 4/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2021-10-04 18:48:30,656 INFO L116 LiptonReduction]: Number of co-enabled transitions 772 [2021-10-04 18:48:33,226 INFO L131 LiptonReduction]: Checked pairs total: 2558 [2021-10-04 18:48:33,227 INFO L133 LiptonReduction]: Total number of compositions: 87 [2021-10-04 18:48:33,235 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2021-10-04 18:48:33,255 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 114 states, 113 states have (on average 2.353982300884956) internal successors, (266), 113 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:48:33,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 113 states have (on average 2.353982300884956) internal successors, (266), 113 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:48:33,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-04 18:48:33,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:48:33,267 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:48:33,268 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:48:33,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:48:33,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1616928099, now seen corresponding path program 1 times [2021-10-04 18:48:33,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:48:33,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515687451] [2021-10-04 18:48:33,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:48:33,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:48:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:48:33,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:48:33,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:48:33,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515687451] [2021-10-04 18:48:33,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515687451] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:48:33,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:48:33,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-04 18:48:33,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971528069] [2021-10-04 18:48:33,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-04 18:48:33,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:48:33,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-04 18:48:33,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-04 18:48:33,479 INFO L87 Difference]: Start difference. First operand has 114 states, 113 states have (on average 2.353982300884956) internal successors, (266), 113 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:48:33,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:48:33,499 INFO L93 Difference]: Finished difference Result 114 states and 236 transitions. [2021-10-04 18:48:33,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-04 18:48:33,500 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-04 18:48:33,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:48:33,511 INFO L225 Difference]: With dead ends: 114 [2021-10-04 18:48:33,511 INFO L226 Difference]: Without dead ends: 114 [2021-10-04 18:48:33,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-04 18:48:33,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-04 18:48:33,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-10-04 18:48:33,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.088495575221239) internal successors, (236), 113 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:48:33,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 236 transitions. [2021-10-04 18:48:33,559 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 236 transitions. Word has length 11 [2021-10-04 18:48:33,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:48:33,559 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 236 transitions. [2021-10-04 18:48:33,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:48:33,560 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 236 transitions. [2021-10-04 18:48:33,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-04 18:48:33,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:48:33,562 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:48:33,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-04 18:48:33,563 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:48:33,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:48:33,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1737618260, now seen corresponding path program 1 times [2021-10-04 18:48:33,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:48:33,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708195047] [2021-10-04 18:48:33,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:48:33,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:48:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:48:33,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:48:33,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:48:33,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708195047] [2021-10-04 18:48:33,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708195047] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:48:33,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:48:33,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-04 18:48:33,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923109778] [2021-10-04 18:48:33,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-04 18:48:33,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:48:33,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-04 18:48:33,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-04 18:48:33,846 INFO L87 Difference]: Start difference. First operand 114 states and 236 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:48:33,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:48:33,945 INFO L93 Difference]: Finished difference Result 132 states and 269 transitions. [2021-10-04 18:48:33,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-04 18:48:33,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-04 18:48:33,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:48:33,949 INFO L225 Difference]: With dead ends: 132 [2021-10-04 18:48:33,950 INFO L226 Difference]: Without dead ends: 122 [2021-10-04 18:48:33,950 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.6ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-04 18:48:33,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-04 18:48:33,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-10-04 18:48:33,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.049586776859504) internal successors, (248), 121 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:48:33,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 248 transitions. [2021-10-04 18:48:33,964 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 248 transitions. Word has length 20 [2021-10-04 18:48:33,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:48:33,965 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 248 transitions. [2021-10-04 18:48:33,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:48:33,965 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 248 transitions. [2021-10-04 18:48:33,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-04 18:48:33,967 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:48:33,967 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:48:33,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-04 18:48:33,968 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:48:33,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:48:33,969 INFO L82 PathProgramCache]: Analyzing trace with hash -821932906, now seen corresponding path program 2 times [2021-10-04 18:48:33,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:48:33,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335261485] [2021-10-04 18:48:33,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:48:33,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:48:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:48:34,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:48:34,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:48:34,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335261485] [2021-10-04 18:48:34,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335261485] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:48:34,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:48:34,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-04 18:48:34,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365191433] [2021-10-04 18:48:34,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-04 18:48:34,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:48:34,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-04 18:48:34,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-04 18:48:34,138 INFO L87 Difference]: Start difference. First operand 122 states and 248 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:48:34,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:48:34,166 INFO L93 Difference]: Finished difference Result 153 states and 305 transitions. [2021-10-04 18:48:34,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-04 18:48:34,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-04 18:48:34,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:48:34,168 INFO L225 Difference]: With dead ends: 153 [2021-10-04 18:48:34,169 INFO L226 Difference]: Without dead ends: 92 [2021-10-04 18:48:34,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-04 18:48:34,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-04 18:48:34,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-04 18:48:34,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.989010989010989) internal successors, (181), 91 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:48:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 181 transitions. [2021-10-04 18:48:34,178 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 181 transitions. Word has length 20 [2021-10-04 18:48:34,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:48:34,178 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 181 transitions. [2021-10-04 18:48:34,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:48:34,179 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 181 transitions. [2021-10-04 18:48:34,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-04 18:48:34,180 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:48:34,181 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:48:34,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-04 18:48:34,181 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:48:34,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:48:34,182 INFO L82 PathProgramCache]: Analyzing trace with hash -676124040, now seen corresponding path program 3 times [2021-10-04 18:48:34,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:48:34,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020562522] [2021-10-04 18:48:34,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:48:34,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:48:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:48:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:48:34,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:48:34,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020562522] [2021-10-04 18:48:34,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020562522] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:48:34,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:48:34,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-04 18:48:34,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383670760] [2021-10-04 18:48:34,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-04 18:48:34,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:48:34,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-04 18:48:34,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-04 18:48:34,317 INFO L87 Difference]: Start difference. First operand 92 states and 181 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:48:34,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:48:34,346 INFO L93 Difference]: Finished difference Result 117 states and 225 transitions. [2021-10-04 18:48:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-04 18:48:34,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-04 18:48:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:48:34,348 INFO L225 Difference]: With dead ends: 117 [2021-10-04 18:48:34,350 INFO L226 Difference]: Without dead ends: 62 [2021-10-04 18:48:34,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.0ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-04 18:48:34,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-04 18:48:34,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-04 18:48:34,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.8360655737704918) internal successors, (112), 61 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:48:34,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 112 transitions. [2021-10-04 18:48:34,362 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 112 transitions. Word has length 20 [2021-10-04 18:48:34,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:48:34,364 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 112 transitions. [2021-10-04 18:48:34,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:48:34,365 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 112 transitions. [2021-10-04 18:48:34,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-04 18:48:34,367 INFO L504 BasicCegarLoop]: Found error trace [2021-10-04 18:48:34,367 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-04 18:48:34,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-04 18:48:34,369 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-04 18:48:34,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-04 18:48:34,370 INFO L82 PathProgramCache]: Analyzing trace with hash -2061490630, now seen corresponding path program 4 times [2021-10-04 18:48:34,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-04 18:48:34,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585209138] [2021-10-04 18:48:34,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-04 18:48:34,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-04 18:48:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-04 18:48:34,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-04 18:48:34,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-04 18:48:34,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585209138] [2021-10-04 18:48:34,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585209138] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-04 18:48:34,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-04 18:48:34,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-04 18:48:34,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791358898] [2021-10-04 18:48:34,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-04 18:48:34,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-04 18:48:34,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-04 18:48:34,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-04 18:48:34,526 INFO L87 Difference]: Start difference. First operand 62 states and 112 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:48:34,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-04 18:48:34,575 INFO L93 Difference]: Finished difference Result 30 states and 52 transitions. [2021-10-04 18:48:34,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-04 18:48:34,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-04 18:48:34,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-04 18:48:34,577 INFO L225 Difference]: With dead ends: 30 [2021-10-04 18:48:34,577 INFO L226 Difference]: Without dead ends: 0 [2021-10-04 18:48:34,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 41.4ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-04 18:48:34,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-04 18:48:34,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-04 18:48:34,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:48:34,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-04 18:48:34,579 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-10-04 18:48:34,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-04 18:48:34,579 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-04 18:48:34,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-04 18:48:34,579 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-04 18:48:34,580 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-04 18:48:34,582 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-04 18:48:34,583 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-04 18:48:34,583 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-04 18:48:34,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-04 18:48:34,588 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-04 18:48:34,589 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-04 18:48:34,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 06:48:34 BasicIcfg [2021-10-04 18:48:34,591 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-04 18:48:34,592 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-04 18:48:34,592 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-04 18:48:34,592 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-04 18:48:34,593 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 06:48:30" (3/4) ... [2021-10-04 18:48:34,596 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-04 18:48:34,603 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-04 18:48:34,603 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-04 18:48:34,608 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-04 18:48:34,609 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-04 18:48:34,609 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-04 18:48:34,654 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-04 18:48:34,654 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-04 18:48:34,656 INFO L168 Benchmark]: Toolchain (without parser) took 5201.05 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 30.3 MB in the beginning and 36.0 MB in the end (delta: -5.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2021-10-04 18:48:34,657 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 44.0 MB. Free memory was 21.1 MB in the beginning and 21.1 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-04 18:48:34,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.13 ms. Allocated memory is still 54.5 MB. Free memory was 29.9 MB in the beginning and 33.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-04 18:48:34,658 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.26 ms. Allocated memory is still 54.5 MB. Free memory was 33.4 MB in the beginning and 31.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-04 18:48:34,659 INFO L168 Benchmark]: Boogie Preprocessor took 24.70 ms. Allocated memory is still 54.5 MB. Free memory was 31.7 MB in the beginning and 30.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-04 18:48:34,660 INFO L168 Benchmark]: RCFGBuilder took 533.47 ms. Allocated memory is still 54.5 MB. Free memory was 30.5 MB in the beginning and 31.1 MB in the end (delta: -552.1 kB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-04 18:48:34,661 INFO L168 Benchmark]: TraceAbstraction took 4265.14 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 30.6 MB in the beginning and 38.7 MB in the end (delta: -8.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-10-04 18:48:34,661 INFO L168 Benchmark]: Witness Printer took 62.77 ms. Allocated memory is still 81.8 MB. Free memory was 38.7 MB in the beginning and 36.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-04 18:48:34,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 44.0 MB. Free memory was 21.1 MB in the beginning and 21.1 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 258.13 ms. Allocated memory is still 54.5 MB. Free memory was 29.9 MB in the beginning and 33.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.26 ms. Allocated memory is still 54.5 MB. Free memory was 33.4 MB in the beginning and 31.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.70 ms. Allocated memory is still 54.5 MB. Free memory was 31.7 MB in the beginning and 30.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 533.47 ms. Allocated memory is still 54.5 MB. Free memory was 30.5 MB in the beginning and 31.1 MB in the end (delta: -552.1 kB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4265.14 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 30.6 MB in the beginning and 38.7 MB in the end (delta: -8.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * Witness Printer took 62.77 ms. Allocated memory is still 81.8 MB. Free memory was 38.7 MB in the beginning and 36.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2659.7ms, 98 PlacesBefore, 30 PlacesAfterwards, 95 TransitionsBefore, 25 TransitionsAfterwards, 772 CoEnabledTransitionPairs, 8 FixpointIterations, 48 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 87 TotalNumberOfCompositions, 2558 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1648, positive: 1499, positive conditional: 0, positive unconditional: 1499, negative: 149, negative conditional: 0, negative unconditional: 149, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 670, positive: 633, positive conditional: 0, positive unconditional: 633, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 670, positive: 614, positive conditional: 0, positive unconditional: 614, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 56, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 91, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1648, positive: 866, positive conditional: 0, positive unconditional: 866, negative: 112, negative conditional: 0, negative unconditional: 112, unknown: 670, unknown conditional: 0, unknown unconditional: 670] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 100, Positive conditional cache size: 0, Positive unconditional cache size: 100, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 67]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 121 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4063.6ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 18.8ms, AutomataDifference: 278.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2721.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 110 SDtfs, 65 SDslu, 153 SDs, 0 SdLazy, 98 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 91.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 127.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=2, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 65.7ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.6ms SsaConstructionTime, 234.6ms SatisfiabilityAnalysisTime, 526.2ms InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 474 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-04 18:48:34,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...